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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 12, 2006
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1998 Buick Skylark Custom 3.1L switch VIN: 1G4NJ52M02
all wires burnED, can not find a wire diagram to install new switch, all wire diagrams are for head light switch mounten on convination switch
1998 Buick Regal LS 3.8L Surge, Cuts out, Stall, MIL Lamp on, abs & airbag lights VIN: 2G4WB52K4W
Vehicle stalls, abs and air bag lights are on intermittently, customer at first thought it only happened when using turn signals but now report it can happen any time. I have not been able to experience the problem and no codes are present in any system. Check...
1998 Cadillac Seville STS 4.6L Electronic VIN: 1G6KY5493W
Customer complains of AC off light coming on while driving and AC stops cooling. When light goes off, system cools great. I have scanned with Modis and no codes present. When test drove, we found this to be true. Only parameter in Modis that I can find is for ...
1994 Chevrolet Lumina APV 3.8L Excessive Emissions, MIL Lamp on VIN: 1GNDUO6L6R
Van came in with mil lamp on. Codes set are not explained in my modis trouble shooter or alldata. Road testing car reveals that EGR is being comanded on but the scan tool shows that it is not opening. I substituted a used EGR and PCM and got the same results. ... Trouble codes: 640 (no description), 670 (no description)
1998 Chevrolet Tahoe LS 5.7L assisted steering VIN: 1GNEK13R6W
Hello GM techs, I have a 98 tahoe with a steering issue. At idle while standing still the power steering will get very hard to turn. as soon as you roll forward it gets easy again untill you stop. I disconnected the solenoid at the back of the pump and the pro...
1999 Chevrolet Silverado 1500 5.3L No Start, Stall VIN: 1GCEK19T5X
truck came from another shop on the hook. it will start and stall. it last about 3 seconds. other shop has replaced fuel pump& reg. i called the dealer with vin # to see if it was equiped with theft deterant. they said not. there is no security lite on instrum...
2000 Chevrolet Venture 3.4L alt VIN: 1GNDX03E0Y
hello again. i have this 3.4 that has a charging problem. 2 az alt have been put on the first lasted 1 day, and the next was charging at 19..4 volts. identifix and genesis said to test the l terminal on the alt unplugged. well i checked 2 ways. 1 way disconnec...
2005 Chevrolet Corvette 6.0L unk VIN: 1G1YY32G62
thanks chevy tecs for your time- we are mostly a bmw- audi shop trying to help a freind. this is a salvage car that has been driven for 2500 miles with no problems since rebuild. check engine light on- reduced power warning message, code p1518-no info on this ...
2001 GMC Sierra 1500 HD SLE 6.0L drive line VIN: 2GTEK69U61
This is the all wheel drive Sierra C3 pick up. There is a bind when turning sharp corners...there is a clank-clank-clank noise as well when the binding takes place. The bind/noise is not there until driving the truck for about 10 miles on the highway to heat t...
2001 GMC Jimmy SLE 4.3L cannot fuel vehicle VIN: 1GKCS13W71
Customer will attempt to fuel vehicle, tank could be near empty, upon opening the gas cap, fuel will literally spray out several feet from vehicle under extreme pressure...then cannot get the vehicle to accept gas, one time he got as much as 67 cents in the ta...
1995 Pontiac Firebird Formula 5.7L Hesitation VIN: 2G2FV22P6S
Hello to all. We have got this Formula Firebird that intermittently will feel like it is starving for fuel. It will act up for about 30 seconds and then clear up. Fuel pressure stays within specs at all times. The EGR valve vacuum hose has been disconnected an...
1999 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WJ52M4X
egr ports are restricted,(still has slight flow) i have verified this. can the passage ways on this 3.1 be successfully cleaned by removing the upper intake plenum, or would the lower need to be removed as well. customer recently had this to the dealer and the... Trouble codes: P0401 (insuff egr flow)
1999 Pontiac Montana 3.4L No Start VIN: 1GMDU06E4X
Van came in on hook no start,we went out and tried it,started.Changed fuel filter it did not start.Has no spark I have a rpm signal,otc scanner says yes to cam signal.I have a 24x signal .It does not have theft system.I notice it had a remote starter that was ...
2002 Pontiac Grand Am SE1 2.2L fuel pump VIN: 1G2NF52F32
Hello, We are experiencing a pass theft system failure. we have retrieved code u1300 (short on serial data line)using solus snap on scanner with can adapter. vehicle intermittently will not start. when no-start occurrs, we have no power to to fuel pump. we a...
1994 Saturn SL 1.9L Surge VIN: 1G8ZF5594R
When car warms up to operating temp the car misfires at low speed around 1500 rpms and u can unhook the egr valve and the misfire stops .Also checked for carbon buildup but everything looked good and according to my scanner the egr solenoid is working fine .

Fixes & Summaries for GM
Fix/Summary Answers
1992 Cadillac DeVille 4.9L Surge, Stall VIN: 1GCD53B7N4
found poor connection at the block bt the starter, cleaned this and so far has been running good for a week Trouble codes: 30 (iac), 31 (map sensor), 74 (mat sensor).
2001 Cadillac Seville STS 4.6L Unknown VIN: 1G6KY54991
Thanks for all replies, ended up purchasing tire monitor reset tool. Customer is in hospital, closing help request for now due to not knowing when vehicle will return. IATN is great. Thanks, Bob.
1992 Chevrolet Corvette 5.7L headlight doors VIN: 1G1YY23P9N
I must be the only one that has'nt run into the bushing issues with these corvettes, william for caly,max from caly,steve from florida, Dennis from Iowa,Joe from Ohio, Mark from Oregon,Jae from maryland and David from Texas were all right on the money, I pulle...
1997 Chevrolet Lumina 3.1L Stall, Misfire, MIL Lamp on VIN: 2G1WL52M4V
After all the time spent on this vehicle, the Lumina left our shop exactly the way it entered, running poorly cold. There was no charge to the customer. The customer took it to the GM dealer who replaced both cylinder head gaskets. Customer stated vehicle has ... Trouble codes: P0300 (random cylinder misfire), P1106 (map sensor circuit intermittent high).
2002 Chevrolet Silverado 1500 4.3L No Start VIN: 1GCEC14W82
Seems my oversight of not checking the plug when replacing the original fuel pump cost me. Dropped gas tank againf found plug terminal brown and streached out..replaced feed wire with new end reassembled connector after cleaning installed new pump..again.I was...
1996 GMC Foreward 5.7L No Start VIN: 4KDB4B1R8T
Well this is a fix, many thanks to all the fax senders, traced this thing out to find a bad ignition relay in the relay center in the middle of the dash. Replaced the relay and all is well. Thanks, T
2001 GMC Jimmy SLE 4.3L lights VIN: 1GKDT13W51
thanks to all who replied. ive been very sick with the flu. i went ahead and replaced the alternator like i thought and it fixed it. alternator diode ripple looked good, the alternator tested good on all aspects. no bad shorts to case...nothing. i just wanted ...
1995 Oldsmobile Cutlass Supreme SL 3.1L signal lights VIN: 1G3WH52MXS
I appreciate all of the help , the adverage of replies said left side of steering colum and they were right . The actual problem turned out to be a broken wire coming from signal switch.
1996 Pontiac Grand Prix SE 3.1L cooling fan VIN: 1G2WJ12M3T
Found the PCM to be going bad. replaced it and all is well. Thanks again Patrick
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